Methanation of carbon dioxide on ni catalysts on mesoporous ZrO2 doped with rare earth oxides

Nina Perkas; Galina Amirian; Ziyi Zhong; Jaclyn Teo; Yosef Gofer; Aharon Gedanken

doi:10.1007/s10562-009-9952-8

Methanation of carbon dioxide on ni catalysts on mesoporous ZrO₂ doped with rare earth oxides

Nina Perkas, Galina Amirian, Ziyi Zhong, Jaclyn Teo, Yosef Gofer, Aharon Gedanken^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

84 Scopus citations

Abstract

About 20-40 mol% Ni/ZrO₂ catalysts doped with Ce and Sm were synthesized by an ultrasound-assisted method and characterized by a number of physico-chemical methods (XRD, HR TEM, BET, XPS). It was demonstrated that the synthesized catalysts had a mesoporous structure, where ca. 10 nm size Ni nanoparticles were incorporated into the rare earth metal modified tetragonal zirconium oxide. The Ni particles formed during the reduction treatment could support the porous structure in the supports, and thus the porous properties of the catalysts were related to the Ni-loading. The maximum porous volume and size were obtained for the catalyst with a 30 mol% Ni loading, which coincidentally exhibited the highest catalytic activity for the methanation of CO₂. After an oxidation-reduction pretreatment, the catalytic activity could be further improved. The increase in the catalytic activity was attributed to the formation of additional active centers on the catalysts' surface.

Original language	English
Pages (from-to)	455-462
Number of pages	8
Journal	Catalysis Letters
Volume	130
Issue number	3-4
DOIs	https://doi.org/10.1007/s10562-009-9952-8
State	Published - Jul 2009
Externally published	Yes

Keywords

Carbon dioxide methanation
Mesoporous structure
Nickel-zirconia catalyst
Rare earth doping
Sonochemical synthesis

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10.1007/s10562-009-9952-8

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title = "Methanation of carbon dioxide on ni catalysts on mesoporous ZrO2 doped with rare earth oxides",

abstract = "About 20-40 mol% Ni/ZrO2 catalysts doped with Ce and Sm were synthesized by an ultrasound-assisted method and characterized by a number of physico-chemical methods (XRD, HR TEM, BET, XPS). It was demonstrated that the synthesized catalysts had a mesoporous structure, where ca. 10 nm size Ni nanoparticles were incorporated into the rare earth metal modified tetragonal zirconium oxide. The Ni particles formed during the reduction treatment could support the porous structure in the supports, and thus the porous properties of the catalysts were related to the Ni-loading. The maximum porous volume and size were obtained for the catalyst with a 30 mol% Ni loading, which coincidentally exhibited the highest catalytic activity for the methanation of CO2. After an oxidation-reduction pretreatment, the catalytic activity could be further improved. The increase in the catalytic activity was attributed to the formation of additional active centers on the catalysts' surface.",

keywords = "Carbon dioxide methanation, Mesoporous structure, Nickel-zirconia catalyst, Rare earth doping, Sonochemical synthesis",

author = "Nina Perkas and Galina Amirian and Ziyi Zhong and Jaclyn Teo and Yosef Gofer and Aharon Gedanken",

year = "2009",

month = jul,

doi = "10.1007/s10562-009-9952-8",

language = "英语",

volume = "130",

pages = "455--462",

journal = "Catalysis Letters",

issn = "1011-372X",

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number = "3-4",

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TY - JOUR

T1 - Methanation of carbon dioxide on ni catalysts on mesoporous ZrO2 doped with rare earth oxides

AU - Perkas, Nina

AU - Amirian, Galina

AU - Zhong, Ziyi

AU - Teo, Jaclyn

AU - Gofer, Yosef

AU - Gedanken, Aharon

PY - 2009/7

Y1 - 2009/7

N2 - About 20-40 mol% Ni/ZrO2 catalysts doped with Ce and Sm were synthesized by an ultrasound-assisted method and characterized by a number of physico-chemical methods (XRD, HR TEM, BET, XPS). It was demonstrated that the synthesized catalysts had a mesoporous structure, where ca. 10 nm size Ni nanoparticles were incorporated into the rare earth metal modified tetragonal zirconium oxide. The Ni particles formed during the reduction treatment could support the porous structure in the supports, and thus the porous properties of the catalysts were related to the Ni-loading. The maximum porous volume and size were obtained for the catalyst with a 30 mol% Ni loading, which coincidentally exhibited the highest catalytic activity for the methanation of CO2. After an oxidation-reduction pretreatment, the catalytic activity could be further improved. The increase in the catalytic activity was attributed to the formation of additional active centers on the catalysts' surface.

AB - About 20-40 mol% Ni/ZrO2 catalysts doped with Ce and Sm were synthesized by an ultrasound-assisted method and characterized by a number of physico-chemical methods (XRD, HR TEM, BET, XPS). It was demonstrated that the synthesized catalysts had a mesoporous structure, where ca. 10 nm size Ni nanoparticles were incorporated into the rare earth metal modified tetragonal zirconium oxide. The Ni particles formed during the reduction treatment could support the porous structure in the supports, and thus the porous properties of the catalysts were related to the Ni-loading. The maximum porous volume and size were obtained for the catalyst with a 30 mol% Ni loading, which coincidentally exhibited the highest catalytic activity for the methanation of CO2. After an oxidation-reduction pretreatment, the catalytic activity could be further improved. The increase in the catalytic activity was attributed to the formation of additional active centers on the catalysts' surface.

KW - Carbon dioxide methanation

KW - Mesoporous structure

KW - Nickel-zirconia catalyst

KW - Rare earth doping

KW - Sonochemical synthesis

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DO - 10.1007/s10562-009-9952-8

M3 - 文章

AN - SCOPUS:67650838749

SN - 1011-372X

VL - 130

SP - 455

EP - 462

JO - Catalysis Letters

JF - Catalysis Letters

IS - 3-4

ER -

Methanation of carbon dioxide on ni catalysts on mesoporous ZrO₂ doped with rare earth oxides

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Keywords

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